When we started developing EMC interference generators we intended to purchase the required power amplifiers but were not able to find suitable products. Thus we decided to develop all elements ourselves: 4-quadrant amplifiers, RF broadband amplifiers, isolation amplifiers, etc. The whole works!
Moreover, “continuous wave" interference generators for the frequency range from DC to 400 MHz and the entire range of accessories: coupling networks, coupling sections, coupling transformers, ...and many more.
Everything developed by Dr. Hubert and produced by Dr. Hubert.
Not only "Made in Germany" but "Made in Bochum".
4-quadrant voltage amplifiers
4-quadrant voltage and current amplifiers